Solution 10455: Equations Used to Create the Graphs on the TI-92 Plus Manual.
...y2+1)^2) + 6*y1* (1-y1)*e^(-y1^2-(y2+1)^2) + 4*(-2*y1-2)*e^(-(y1+1)^2-y2^2) yi2= {0, 0, -.5, -1, -1} WINDOW setting (Press [♦][WINDOW]) t0=0 tmax=30 tstep=.1 tplot=0 xmin=-2 xmax=.5 xscl=1 ymin=-2 ymax=1 yscl=1 ncurves=0 diftol=.0001 fldres=30 GRAPH FORMAT (Press [F1][9]) Coordinates: ...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/10455
Solution 15809: Calculating Equivalent Units of Time on the TI-15 Explorer™.
...conds. 450 seconds = ? minutes and ? seconds. Solution: • Press [4] [5] [0]. • Press [Int÷]. • Press [6] [0] [ENTER]. The calculator should display 7r30. Please see the TI-15 Explorer guidebook for additional information. Solution 15809: Calculating Equivalent Units of Time on the TI-15 Explorer...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/product-usage/15809
Solution 10939: Calculator Options for Individuals with Visual Impairments or Low Vision.
...Software for MathPrint™ Calculators: this software offers emulators for the following scientific calculators from Texas Instruments. TI-30XS MultiView™ TI-30XB MultiView™ TI-34 MultiView™ TI-SmartView™ CE Emulator Software for the TI-84 Plus Family: this s...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/general-information/10939
Solution 31871: Polar and Rectangular Conversions on the TI-36X Pro.
...se see the instructions below for polar and rectangular conversions on the TI-36X Pro: Example: Polar to Rectangular Convert the polar coordinates (5,30) to rectangular. 1) Input 5 and press [2nd] [complex] 2) Select 1: Ð and press [enter] 3) Input 30 4) Press [enter] The answer displayed is: 4....https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/product-usage/31871
Solution 18129: Polar and Rectangular Computations and Conversions on the TI-36X Solar.
...gular numbers.Example: Polar to Rectangular[2nd] [P►R] converts polar coordinates (r,Ө) to rectangular coordinates (x,y).Convert polar coordinates (2,30) to rectangular.• Press [2nd][DRG] until the desired mode is displayed if the mode is not in degrees.• Press [2] [x◄►y], [3] [0].• Press [2nd][P...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/product-usage/18129
Solution 22950: Battery Type for the TI-10, TI-15 Explorer™ and the TI-108.
...do the TI-10/TI-15 Explorer/TI-108 use? Both the TI-10 and the TI-15 Elementary calculators use one CR2025 Lithium Battery. The TI-108 uses one LR1130 Lithium Battery if purchased after 2014. The TI-108 uses one CR1220 Lithium Battery if purchased from 2014-2004. If you do not remember the purc...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/general-information/22950
Solution 12711: Availability of Overhead Versions of Non-Graphing Calculators.
... Stokes Publishing makes Overhead Calculators of most of the TI non-graphing Instructional Calculators such as the TI-108, TI-10, TI-15 Explorer™, TI-30X IIS, TI-30XS MultiView™, TI-34 II Explorer Plus™, etc. Stokes Publishing (800)550-5254 U.S. (408)541-9145 Outside (408)541-9149 Fax customerser...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/general-information/12711
Solution 34674: Maximizing a Linear Function with the Inequality Graphing Application on the TI-84 Plus CE and TI-84 Plus C Silver Edition.
...plication. Example: Maximize the profit, P= 3X+2Y, for quantities of two products, X and Y, given the following constraints on materials and time: X30, Y30 Y+X≥10 3X+Y≥15 Solution: • Press [APPS] to display the list of applications on the calculator. • Select Inequal (or Inequalz). The Inequ...https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/product-usage/34674
Solution 12312: Random Number Generator Feature on the TI-36X Solar.
...he TI-36X Solar does not feature a random number generator. The following models in our current scientific product line feature this function: • TI-30XS MultiView™ • TI-30X IIS/B • TI-34 MultiView™ • TI-36X Pro™ Please see the TI-36X Solar guidebook for additional information. Solution 12312: ...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/product-usage/12312
Predicting White Blood Counts
Students find equations, which best-fit the data, using different regression models built into their calculators. The best method of handling this data, is to break the data into sections and fit different periods of time with different equations. Using their models, they predict when the patie...https://education.ti.com/en/activity/detail/predicting-white-blood-counts
Outbreak!
In this activity, students simulate the spread of a virus. They produce a graph representing the spread and analyze the rates of change over time. Students compare how viral and bacterial infections spread in a population.https://education.ti.com/en/activity/detail/outbreak
Metabolic Magicians
In this activity, students understand the relationship between enzyme reaction rates and various environmental factors such as pH and temperature. They recognize the metabolic differences between endotherms and exotherms. They generate graphs by inputting reasonable data modeling enzyme activity ...https://education.ti.com/en/activity/detail/metabolic-magicians
Solving Equilibrium Problems
In this activity, the students will use the Calculator application to determine the unknown species (x) using known initial concentrations, the change in concentration, and a given value for the equilibrium constant (K). The student will use the following functions: the Calculator Application the...https://education.ti.com/en/activity/detail/solving-equilibrium-problems
Law of Definite Proportions
The law of definite proportions states that a chemical compound always contains exactly the same proportion of elements by mass. The French chemist Joseph Proust conducted several experiments between 1798 and 1804 to make this discovery. At the time (before Dalton had proposed his atomic theory)...https://education.ti.com/en/activity/detail/law-of-definite-proportions
Molar Gas Lab
Students use stoichiometry to determine the mass of oxygen gas in a bottle. They may also check their answer against the amount of potassium chloride produced during the reaction.https://education.ti.com/en/activity/detail/molar-gas-lab
Science TODAY™ - Growing Bigger by the Decade
Students will examine the current and predicted population data from the countries included in the USA TODAY Snapshot® "Growing bigger by the decade".https://education.ti.com/en/activity/detail/science-today--growing-bigger-by-the-decade
Investigating of pH and Conductivity during a titration of a diprotic acid
In this investigation sulfuric acid will be added to a solution of Ba(OH)2 using a pH probe and a conductivity probe. From this process the pH of first and second equivalence points will be determined along with mapping the conductivity during the titration process.https://education.ti.com/en/activity/detail/investigating-of-ph-and-conductivity-during-a-titration-of-a-diprotic-acid
Vernier - Enzyme Action: Testing Catalase Activity
Students will use an O2 Gas Sensor to measure the amount of O2 produced when H2O2 is broken down by the enzyme catalase at different concentrations, pH values, and temperatures. They will also measure the enzyme's initial reaction rates.https://education.ti.com/en/activity/detail/vernier--enzyme-action-testing-catalase-activity
Vernier - Photosynthesis and Respiration
Students use the gas sensors to measure the amounts of oxygen and carbon dioxide consumed or produced by a plant during respiration and photosynthesis. They also determine the rate of respiration and photosynthesis in a plant.https://education.ti.com/en/activity/detail/vernier--photosynthesis-and-respiration
Science TODAY™ - More of U.S. (formally Science TODAY™ - More the Merrier)
Students examine the USA TODAY Snapshot™ "More of U.S.", construct a graph from the data, produce a mathematical model (linear) for the data, determine the rate of change for the data, and make predictions about future population levels.https://education.ti.com/en/activity/detail/science-today--more-of-u-s--formally-science-today--more-the-merrier
Science TODAY™ - The USA's Expanding Weight Problem
This activity reveals the incidence of obesity in the United States. Students will analyze "The USA's expanding weight problem" and other data to construct a graph, analyze the trends in the data, and make predictions about the future.https://education.ti.com/en/activity/detail/science-today--the-usas-expanding-weight-problem
Gas Lab
Students determine the molecular weight of a pure gas in a balloon by using gas laws and trapping the gas in a glass bottle. Students watch the instructor demonstrate the lab on day one. On day two and three they practice the lab. On day four we discuss the lab and all the calculations. On da...https://education.ti.com/en/activity/detail/gas-lab
Vernier - Nitrate
Student uses the Nitrate Ion-Selective Probe to measure the Nitrate ions concentration in water samples. In another method, student converts nitrate ions to nitrite and use the Vernier Colorimeter to measure nitrite and calculate the nitrate levels.https://education.ti.com/en/activity/detail/vernier--nitrate
Vernier - pH
Students use a pH sensor to measure the pH level of water in a stream or lake. They examine how air pollutants like sulphur dioxide, nitrogen oxides, and carbon dioxide cause acid rain, which affects the pH of water bodies and aquatic organisms.https://education.ti.com/en/activity/detail/vernier--ph
Something's Fishy
In this activity, students examine the size, mass, and growth rates for three species of fish. They interpolate and extrapolate from best-fit models. Students compare the growth rates of endothermic and exothermic animals.https://education.ti.com/en/activity/detail/somethings-fishy